Cause hey, it's a hybrid console now. So Nintendo doesn't have to (theoretically) worry about releasing Mario Kart/Mario/Zelda/Donkey Kong/whatever on multiple systems in a generation any more. Which in turn, should leave them room to work on more 'niche' games like the Wario series.
So what kind of Wario game do you want to see released for it? Or heck, the kind you expect Nintendo to put out either way?
Given that its a hybrid console there is room for all three.
Most of all i wanted a new Land game, not expecting it knowing nintendo. They're obviously going for a Ware game making use of the joy cons i just know it. Not that i'd dislike that but the Land games have always been the TRUE Wario to me, but i still love Ware but i'd feel let down without Wario Land on the Switch.